1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Katarina [22]
3 years ago
9

Mary starts at the edge of a circular platform that is slowly rotating on a frictionless axle. She then walks towards the opposi

te edge, passing through the platform center. Describe the motion of platform as Mary makes her trip. Explain the physics.
Physics
1 answer:
bulgar [2K]3 years ago
6 0

Answer:

Explanation:

The motion of Mary along the circular path is a centripetal.

As Mary moves from one edge of the circular platform to the other edge, she is covering a distance which is the radius of the circular path at a velocity.

According to the relationship

w = v/r where

w is the angular velocity

r is the radius

v is the linear velocity

Initially, before Mary starts, her linear speed is zero and her angular velocity is also zero. As she move towards the opposite edge, she is covering a distance of radius r. According to the formula, increase in radius will leads to decrease in her angular velocity and vice versa. As Mary starts moving towards the centre of the circular path, her angular velocity increases, at the centre of the platform, her angular velocity is at maximum at this point. As she moves further from the center to the other edge, her angular velocity decreases due to increase in distance covered across the circular path.

You might be interested in
A NASA satellite has just observed an asteroid that is on a collision course with the Earth. The asteroid has an estimated mass,
Citrus2011 [14]

Answer:

v = 7934.2 m/s

Explanation:

Here the total energy of the Asteroid and the Earth system will remains conserved

So we will have

-\frac{GMm}{r} + \frac{1}{2}mv_0^2 = -\frac{GMm}{R} + \frac{1}{2}mv^2

now we know that

v_0 = 660 m/s

M = 5.98 \times 10^{24} kg

m = 5 \times 10^9 kg

r = 4 \times 10^9 m

R = 6.37 \times 10^6 m

now from above formula

GMm(\frac{1}{R} - \frac{1}{r}) + \frac{1}{2}mv_0^2 = \frac{1}{2}mv^2

now we have

2GM(\frac{1}{R} - \frac{1}{r}) + v_0^2 = v^2

now plug in all data

2(6.67 \times 10^{-11})(5.98 \times 10^{24})(\frac{1}{6.37 \times 10^6} - \frac{1}{4 \times 10^9}) + (660)^2 = v^2

v = 7934.2 m/s

5 0
3 years ago
In the fusion reaction occurring in the Sun, how does the mass of helium atom formed compare to the mass of the hydrogen atoms?
PolarNik [594]
B bc there is a lot of hydrogen used

3 0
3 years ago
What is unusual about the results of mass determinations of clusters of galaxies?
Art [367]

Answer:

I think it's bigger than most galaxies

3 0
2 years ago
Read 2 more answers
A piston is filled with gas. When the pressure is increasing, what is happening to the volume? Assume that all other properties
Kryger [21]
The correct answer is letter C. Volume is decreasing. For a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume<span> are </span>inversely proportional<span>. </span>
3 0
3 years ago
Which of the following is a small star that has reached the end of its stellar evolution?
Akimi4 [234]
D.) White Dwarf

It is the smallest star whose mass is approximately equal or greater than 1.4M
Here, M = mass of the Sun.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Other questions:
  • When a liquid is introduced into the air space between the lens and the plate in a Newton's-rings apparatus, the diameter of the
    15·1 answer
  • Accorrding to Kepler's third law, a planet whose distance from the Sun is 2 A.U. would have an orbital period of how many Earth-
    14·1 answer
  • Which atomic model is missing from this set?
    6·1 answer
  • Why is a noble gas different from other elements?
    7·2 answers
  • A particular X-ray photon has initial energy of 60 keV when it enters the body. This photon transmits through 30 cm of soft tiss
    13·1 answer
  • You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7J
    10·1 answer
  • Suppose the ice caps at the South and North poles melted due to the global warming and the water was distributed uniformly over
    7·1 answer
  • Help please <br>the question is in the picture ​
    8·2 answers
  • A spring is hung from the ceiling. When a block is attached to its end, it stretches 2.6 cm before reaching its new equilibrium
    5·1 answer
  • A boy holds a toy soldier in from of a concave mirror. The focal length of the mirror is 0.45 m and the boy holds the toy soldie
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!